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drm/i915: Panel commands can be sent only when clock is in LP11

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Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Shobhit Kumar 2014-04-09 13:59:34 +05:30 committed by Daniel Vetter
parent f1c79f16d7
commit 339023ec34
1 changed files with 17 additions and 0 deletions
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17
drivers/gpu/drm/i915/intel_dsi.c
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@ -229,6 +229,23 @@ static void intel_dsi_disable(struct intel_encoder *encoder)
msleep(2);
}
/* Panel commands can be sent when clock is in LP11 */
I915_WRITE(MIPI_DEVICE_READY(pipe), 0x0);
temp = I915_READ(MIPI_CTRL(pipe));
temp &= ~ESCAPE_CLOCK_DIVIDER_MASK;
I915_WRITE(MIPI_CTRL(pipe), temp |
intel_dsi->escape_clk_div <<
ESCAPE_CLOCK_DIVIDER_SHIFT);
I915_WRITE(MIPI_EOT_DISABLE(pipe), CLOCKSTOP);
temp = I915_READ(MIPI_DSI_FUNC_PRG(pipe));
temp &= ~VID_MODE_FORMAT_MASK;
I915_WRITE(MIPI_DSI_FUNC_PRG(pipe), temp);
I915_WRITE(MIPI_DEVICE_READY(pipe), 0x1);
/* if disable packets are sent before sending shutdown packet then in
* some next enable sequence send turn on packet error is observed */
if (intel_dsi->dev.dev_ops->disable)